16-PHP-Draw_an_S

<?php
/**
 * Created by PhpStorm.
 * User: Vasil Kotsev
 * Date: 17-Jul-18
 * Time: 20:47
 */

    for ($i = 1; $i <= 9; $i++)
    {
        $placeholder = 0;
        for ($j = 1; $j <= 5; $j++)
        {
            if ($i == 1 || $i == 9 || $i == 5){
                $placeholder = 1;
            } else if ($i == 2 || $i == 3 || $i == 4){
                if ($j == 1){
                    $placeholder = 1;
                } else {
                    $placeholder = 0;
                }
            } else if ($i == 6 || $i == 7 || $i == 8){
                if ($j == 5){
                    $placeholder = 1;
                } else {
                    $placeholder = 0;
                }
            }
            $color = "";
            if ($placeholder == 1)
            {
                $color = "blue";
            } else {
                $color = "";
            }
            echo "<button style='background-color:$color'>$placeholder</button>";
        }
        echo "<br />";
    }

?>